Dyeing apparatus



"Nov; 9 ,T926.

H. E. VAN NESS DYEING APPARATUS Filed June 15. 1923 5 Sheets-Sheet 1 (liken W15 Nov. 9 1926. 5 1

H. E. VAN NESS DYETNG APPARATUS Filed June 15. 1923 5 Sheets-Sheet 2 H. E. VAN NESS DYEING APPARATUS Filed June 15. 1923 5 Sheets-Sheet 5 Nov. 9, 1926. 1, 06,196

Nov. 9 1926.

H. E. VAN NESS DYEING APPARATUS Filgd June 15, 1923 5 Sheets-Sheet i ll/al/llllllllll l l Nov. 9 1926. 1,606,196

H. E. VAN NESS Y DYEING APPARATUS Filed June 15. 1923 5 Shets-Sheet a Will HENRY E. VAN HESS, OF ELMIRIA, NEW YORK.

DYEmG APPARATUS.

Application filed June 15, 1923. Serial No. 645,488.

This invention relates to dyeing apparatus, and particularly ,to apparatus adapted for use in the method of dyeing described and claimed in United States Patent No. 1,456,344, issued to me on May 22, 1923.

A machine for carrying out this method of dyeing, by injecting limited quantities of dye into predetermined parts of an absorbent mass, is described and claimed in my co-pendin'g application filed April 3, 1923, Serial No. 629,633, now Patent Number 1,577,884, March 23, 1926. The present in: vention aims to increase the output of such a machine and to improve the quality of the work done thereby, and, in general, to provide an improved machine for carrying out the said method of dyeing.

Specific objects of the invention are to provide, in a machine for dyeing a mass of yarn or other absorbent mass, means for making injections of dye at a plurality of points of the mass under equal pressures, means for adjusting such pressures and the quantity of dye injected at each point, simplified means for instantaneous injection under pressure, means for directing any drip from the injector away from the surface of the mass, automatic means operative after each injection to set the ass in predetermined relation to the injector for the next injection, and a self-adjusting clutch to hold the mass.

The nature of the invention, and the means by which I obtain these and other objects of the invention, may best be understood from a detailed description of a practical yarn dyeing machine embodying the invention. Such a machine is illustrated in the accompanying drawings,.in which Fig. 1 is a plan view of the machine; I

' Fig. 2 is a front elevation of the machine;

Fig. 3 is an end elevation of the machine;

Fig. 4 is an end view of the machine showlng the shaft of the work holder in axial section and other parts sectioned on .the line 4-4 of Fig. 1;

Fig. 5 is a fragmentary front view looking in the direction of the arrow 5 in Fig. 1, with parts broken away and parts in section;

Fig. 6, is a developed view of the peripheral face of the wheel of the work holder;

Fig. 7 is a top view of the clutch for ho ding the cone of yarn, partly in axial section; if

Fig. 8 is a transverse section on the line 88 of Fig. 7;

the bottom of-t Fig.9 is an elevation of the pump and the injector sectioned on the plane which includes the axis of the pump and the axis of the injector;

Fig. 10 is an elevation of the pump sectioned on an axial plane at right angles to the section plane of Fig. 9;

Fig. 11 is an elevation of the piston of the pump looking toward the side opposite to that shown in :Fig. 10; r

Fig. 12 is a transverse section of the pump pisfion taken on the line 12-12 of Fig. 11; i an Fi 13 is a fragmentary elevation showing t e relief valve in axial section.

The yarn spotting machine shown in the drawings has a frame comprising a plate B supported on end frames B 13 at about the height of an ordinary work bench. On the plate B are mounted a dye tank T, a pump P and a work holder W. In the use of the machine, acone C of yarn is supported on the work holder W, and measured quantities of liquid dye from the tank T are forced into the cone by the pump P through an injector J, which is mounted on the cylinder of the pump. q

The pump P has a cylinder P, which has at its lower end a flange P, which is bolted to the plate B. The lower portion of the cylinder P serves merely as a support for the operative parts of the pump and contains a large axial bore P to reduce its weight. The upper portion of the pump cylinder P contains a smaller axial b0re,'the lower end of which is closed by a The portion of the smaller bore a ove the plug P provides a chamber P into which liquid dye flows from the tank T;and from which measured quantities of the dye are expelled under pressure. The chamber 1? is provided with an inlet opening P, an air vent opening P and a discharge opening P The outer end of the inlet opening P is connected by a ipe P with an opening near lie tank 'T. The outer end of the opening P" communicates with an open vent pipe 1?. The discharge opening P communicates with apparatus J for directing liquid dye into a mass of yarn supported on the work holder W. This apparatus, which for the sake of brevity, I term an injector, is hereinafter described in detail. A piston P is slidably mounted in the bore forming the chamber P. The upper.

lug- P.

partef piston P forms a plunger P closing the upper end of the chamber P,

while the lower part of the piston is bored out to form a valve sleeve 1 containing ports P, P", and P which register with the openings P P, P respectively in certain positions of the piston. The ports P .and P are formed by horizontal slits through a wall of the sleeve 1?, while the port l? is formed by a round hole in the wall of the sleeve.

A blind boreentering the lower end of the plu er 1 provides a compression chamber 12 in which air is trapped.

The piston P is thrust upward by a compression spring P reacting between the lower end of the sleeve 1? and the plug P, A pin 1 projecting through the wall of the cylinder P into a longitudinal slot P in, the piston P prevents turning of the piston, and limits its upward movement under the thrust of the spring P. The upper end of the piston P normally projects above the top surface P of the cylinder P and is formed to provide a cam surface P The piston 13, which forms the valve sleeve 1? and the plunger 1 of the pump, is operated by means of'a cam P having a cam surface P adapted to engage the cam surface P at the upper end of the piston P. The cam P is fixed on a shaft P .which is rotatably mounted in two ears P extending upwardly from the upperend of the cylinder P The shaft P and the cam P are oscillated by power driven mechanism under the control of an operator. A lever P fixed on the shaft P (and preferably formed integral with the cam P as shown) is con; nected by means of a connecting rod P with acrank P fixed on a shaft P located below the plate B and having a bearing in the end frame B and a bearing in a boss B formed 6h the lower side of the plate B. The shaft P can be connected by means of a clutch I? with power-driven mechanism operated at a uniform speed. Such mechanism may include a pulley wheel P rotatably mounted on the shaft P and driven by a belt not shown in the drawings. '-The clutch P and its operating'mechanism P which is connected toa foot pedal P. is so arranged that each time the foot pedal P is depressed, the clutch is closed during one complete revolution of the pulley wheel P", and then automatically released. As clutches of this character are well known, being commonly used in punching machines, the clutch P is not herein described in detail. The clutch is so set that after causing a revolution of the shaft P it releases the shaft with the crank 1? turned upwardly as shown in Figs. 2 and 10. The crank P is shorter than the lever P so that each revolution of the shaft P and crank P causes the lever P to OS- cillate between its raised position shown in Fig. 10 and a position in which its axis lies on the dotted line P of Fig. 10.

The operation of the pump is as follows:

When the lever P is in raised position, the cam 1 the valve sleeve P and the plunger P occupy the positions shown in Figs. 9 and 10. The valve ports P and P register with the inlet opening P and the air vent Pfirespectively, so that liquid dye flows by gravity from the tank T into the chamber P and fills the chamber. During the filling, the air which was contained in the chamber escapes through the vent pipe 1?, but some air is trapped in the chamber P in the plunger P.

On the down stroke of the lever P, the portion P of the cam surface P engages the cam surface P and depresses the piston P The initial downward movement causes the sleeve P to close the inlet opening P and the air vent opening P and as soon as this has occurred,the plunger P forces a portion of the liquid dye confined in the chamber P into the lower part of the compression chamber P compressing the air trapped therein. The liquid dye in the chamber P is, therefore, placed under an increasing pressure as the piston P descends.

When the sharply inclined portion P of the cam surface P engages the cam surface P, the piston P is given a sudden short downward movement which brings the'port P of the sleeve P into register withthe discharge opening P thus opening the dis-- charge opening instantaneously. The downward movement of the piston then ceases, owing to the fact that the portion P of the cam surface P is concentric withthe shaft P On the opening of the discharge opening P liquidis ejected from the chamber P by the pressure stored in the compression chamber P As a result, a measured quantity of liquid, that is, the amount displaced by the movement of the plunger, is ejected from the chamber P under pressure and almost instantaneously.

On the upstroke of the lever P thepiston P is raised by the springP so that when, at the end of the up stroke, the clutch P is opened, the ports P P of the sleeve P again register with the openings P. P". permitting the dye to flow from the tank T into the chamber P As the power-driven mechanism bvwhich the pump is operated is driven at a substantially uniform rate, all the down strokes of the lever P and the piston I? take place at the same velocity. It follows that the same pressure is attained in'the chamber P on each down stroke of the piston, so that the pressure under which the contents of the chamber 1? may be injected through the injector J -is the same on each operation of the pump. A pressure gauge P may be is not closed by the valve sleeve P at the end of the down stroke of the piston P. The relief valve 1? has an outwardly opening valve member P which is urged toward its seat by a compression spring P reacting between the valve member and an ad justable plug P which is screwed into the body P of the valve. The discharge opening P of the valve body is connected by a- .pipe P to the upper part ofthe tank T above the normal level of the liquid-in the tank.

If the plug P is set so that the valve member P is forced from its seat by a pressure less than that attained in the chamber P at the end of the down stroke of the piston P, the valve member P may be displaced from its seat during the latter part of the down stroke, that a part of the liquid in the chamber P is by-passed back to the tank T through the pipe P. It follows that the pressure in the chamber P cannot rise materially above the pressure at which the valve member P is displaced. Consequently, the pressure atwhich dye is discharged from the chamber P through the injector J on each down stroke of the piston P may be adjusted by turning the plug P, It will be apparent to those skilled in the art that many forms of mechanicalmeans other than that described may be provided for adjusting the pressure under which the dye is discharged through the injector and v a any such means is, for this purpose, equivalent to that described. The particular means described, however, performs functions in addition to the adjustment, of the pressure. It serves also as a means for adjusting the quantity of liquid forced through the injector on each operation of the pump. It

serves also as a means for indicating to the operator whether or not liquid has been passed through the injector under the desired pressure. This is because the falling of the liquid by-passed through the pipe P into the tank T may be both visible and audible. If no liquid is by-passcd on a down stroke of the piston P, the operator is informed that, because of leakage, or for some other reason, the desired pressure has not been attained in the chamber P When the relief the nozzle J valve P is used, therefore, the pressure gauge P may be dispensed with, except in cases where it is desired to inject the liquid under the maximum pressure which may be obtained in the pump chamber.

In order to facilitate changing the dye used in the machine, ,the tank T and the pump chamber P are provided with drain pipes T P each containing a valve which is closed during the normal operation of the machine. I

The oscillation of the shaft P is utilized to stir the dye in the tank T so as to prevent a separation of the ingredients of the dye. For this purpose, this shaft is extended into or over the tank T and connected by bevel gears T with a vertical shaft T mounted in the tank and bearing a stirrer T which may have the form of a paddle, as shown. The oscillatory movements of the shaft P thus cause rotation of the stirrer T first in one direction and then in the other, effectively agitating the dye in the tank.

Apparatus is'provided for directing the limited quantities of liquid which are ejected from the pump into a mass-of yarn supported on the work holder. Such apparatus 1 have, for the sake of brevity, termed an injector. It may consist merely .of a nozzle, by which term I designate any device providing a discharge opening for directing liquid in a predetermined direction. A fea-' ture of the invention consists, however, in forming the injector so that it opens a narrow passage into the mass and directs the liquid into the mass through this passage. In order that the mass may be dyed evenly throughout all or a considerable portion of its depth, the injector is formed to permit lateral expansion of the shaft of liquid injected i'ntothe mass throughout" the depth of the injection. The injector is formed also to prevent the liquid from spreading over the surface of the mess around the point at which it is injected.

As shown in Fig. 9, the injector J comprises a nozzle J and a needle J fixed in the discharge opening of the nozzle. The nozzle J has a body J on the rear end of which is a threaded stem J, which is screwed intoa tapped hole l? in the cylinder P. This hole P communicates with the discharge opening P The projection J contains an axial bore J which is the intake opening of the nozzle J. The central portion of the body J of the nozzle provides a flange J 8 which is seatedagainst the boss P on the cylinder P In an'enlarged bore in the front portion of the body J is located a chuck J containing an axial bore J which forms the discharge opening of Thechuck J is retained in the body by a nut J which is screwed on the front end of the body and engages the lit chuck J so as to force the conical inner end J of the chuck against a conical seat in the body. The chuck J has at its outer end a flat contact surface J which is thrust against the surface of the mass to be dyed when the mass is brought into operative relation with the injector. On the outer end of the nut J is a stop J providing an annular surface J lying behindthe contact surface J and spaced outwardly therefrom. The stop J has the form of a cup converging towards its outer end, so that it catches any dye which may drip from the end of the nozzle J and directs it away from the surface of the cone of yarn. Small openings J in the rear end of the stop permit the escaperof such liquid and direct it so that it falls clear of the cone of yarn. F

The needle J 2 has its rear end inserted in the axial bore J of the chuck J It is retained in the chuck by contracting the chuck'by screwing the nut J inward. As the shaft of the needle is of uniform diameter, it may be gripped at any point by the chuck. It follows that the distance which the needle projects beyond the contact surface J may be adjusted, and that after an adjustment is made and the nut J is screwed in tightly, the needle is held in fixed relation to this contact surface.

The needle'J has a pointed front end J, the apex of which is on the axis of the needle. The needle is formed to provide a longitudinal passage J which extends substantially its entire length and communicates with the discharge opening J of the nozzle. The needle is formed to permit lateral egressv from this passage throughout substantially the entire length of the projecting portion of the needle. In the form of injector shown such egress is permitted by giving the longitudinal passage J the form of an open groove. The needle J should be secured in the chuck with the open side of its groove J turned in such direction that the strands of the mass into which the needle is thrust are not drawn tightly over the groove. so as to obstruct the egress of liquid therefrom. In the specific machine illustrated the open side of the groove J is turned either directly up, as shown in the drawing, or directly down.

Means are provided for preventing the liquid which is forced into the injector from spreading over the surface of the mass into whichit is to be injected. In the form of injector shown the contact surface J at the outer end of the nozzle serves this purpose when it is pressed firmly against the surface of the mass. I T

The Work holder W is adapted to support a wound mass of yarn for movement towards and away from the injector to bring the mass into and out of operative relation to Rotation of this plunger in the bore'is prethe injector. These movements are in d1- rections parallel to the axis of the injector, i. e.,of its discharge opening J, and consequently parallel to the needle J of the injector. The work holder also permits movements of the surface of the mass in directions transverse to the'needle J so that different points of the surface of the mass may be brought opposite the injector. Means are provided for arresting the latter movements so as to provide for bringing predetermined points of the surface opposite the injector. The work holder illustrated is adapted to support a cone of yarn. This expression, cone of yarn, is used herein in its conventional sense to indicate a hollow frustoconical mass of yarn wound on a frustoconical core. Such cones of yarn are usually cross-wound, having two lays at an angle to each other. Such a cone usually has a convex surface at its. larger end and a concave surface at its smaller end. To support such a cone, the work holder W is provided with a shaft W on the inner end of which is a self-adjusting clutch K,- operated by a push rod W lying in an axial bore of the shaft W, a cam W engaging the outer end of the push rod, and a lever W for turning the cam.

The clutch K is best shown in Figs. 4, 7 and 8. It has a body K which is formed as an integral axial extension from the back end of the shaft W Its external diameter, is less than that of the shaft W and it tapers inwardly toward its outer end. The body K contains an axial bore K which extends from the end of the bore in which the push rod W is located. A disc K is fixed on the inner end of the body K by means of a set 1 screw K The peripheral surface K of this disc is frusto-conical. A bore K extends diametrically through the disc K? and through the inner end of the body K. The ends of this bore are closed by plugs KR In each side ofthe bore is a pin K having a pointed outer end, adapted to project outwardly through a central hole inone of the plugs K. On the inner end of each pm K is a plunger K having at its end a cam surface K". The pins and 'plungers are normally pressed inward by compresslon springs K They may be forced outwardly by engagement, of ani'nclined cam surface K formed at or near the inner end of the push rod W, with the cam surfaces K A plunger K is slidably mounted in the outer portion of the bore K in the body K vented by a transverse pin K extending through the, body K and lying in a longitudinal slot in'the plunger K Outward movement of the plunger is limited by the engagement of a transverse pin K fixed inthe plunger with the pin K". The plunger teoaiee K and a spacing pin K (which may be surface K of the disc K held in this position and the lever W is made integral with the push rod W as shown or integral with the plunger K) are inserted between the inner end of the spring K and the inner end of the push rod W Tn securing a cone C on the clutch K, the lever 4V is first moved into horizontal position, turning the" cam V7 to permit the spring K to push the push rod W outward, bringing the pin K between the plungers K. The plungers K are thrust in against the pin K by the springs K so that the outer ends of the pins K lie within the peripheral surface of the disc K The hollow core C on which the cone G of yarn is wound is then placed around the clutch body K and thrust inward until-its inner surface is brought against the peripheral The core is then turned from horizontal to vertical position, forcing the push rod Vi inward. The initial inward movement of the push rod brings the cam surface K of the rod against the cam surfaces K of the'plungers K and thrusts the pins K outwardly, so that their points enter the core C The inward movement of the push rod increases the tension on the spring K causing this spring to press the outer end of the plunger K firmly into the small end of the core C It is apparent from the above description that the clutch K will adjust itself automatically to cores of different lengths and that it will hold a core firmly with'its axis in line with the axis of the shaft W I The shaft W is mounted on a standard W which projects up from a plate W.

The shaft W is' mounted so that its axisand the axis of the cone C lie in the same horizontal plane as the needle J The shaft is inclined to the needle at such an angle that the cones surface C, which is towards the injector, is substantially perpendicular to the needle J.

In. order to provide for movement of the cone towards and away from the injector, the plate VV is slidably mounted on two bars W. which extend parallel to the needle J The bars W are'mountedon a frame W which is mounted onthe plate B of the machine in the manner hereinafter described. A lever W is provided for causing sliding movements of the plate W on the bars W. This lever is pivoted at W to a cross piece 7 secured to the ends of the bars .V and has a pin and connection with an arm W extending from the outer end of the plate W An adjustable stop connection with the frame W at W C W is provided for limiting inward movements of the plate W, This stop is set to prevent the plate TV from moving inward to an extentsuficient to bring the point Ji of the needle J into contact with the body K or the clutch K as such contact would injure the point on the needle. The stop 'W is, however, not used to arrest the inward movements of the plate W in the ordinary operation of the machine, as the stop J accomplishes this purpose. Outward movement of the plateW is limited by contact between the outer end of the plate and collars W on the bars W.

The work holder permits movements of the surface of the cone C in directions perpendicular to the needle J Two movements of this sort are provided for. One is a bodily movement of the cone in the direc tion of the side C of the cone which is adjacent to the injector. Such movement is provided by mounting the frame W which carries the bars -W, so that it may slide across the plate l3. h or this purpose, the frame W is mounted on two cross bars W and W, whose ends are held in projections B formed on the upper surface of the plate B. The frame W may he slid along these bars by means of a lever -W which is pivoted to the plate B at W and has a slot and pin In order to arrest the sliding movement of the frame W at predetermined points, the cross bar Vi? is provided with recessesW and W and the frame W carries a springpressed plunger W havinga pointed end adapted to enter either of these recesses. The cross bar W isheld against longitudinal movement on the plate B by a set screw W By loosening this screw, the longitudinal position of the-bar may be adjusted to vary the positions in which the motion of the framed/V is arrested by the means de-. scribed.

A further movement of the surface of the cone C is permitted by mounting the shaft W in a bearing on the standard W in which the shaft is free to rotate. Means are provided for utilizing the in-ahdouit movement of the cone and the plate W to cause successive limited rotary movements of the shaft W and the cone. For this purpose a ratchet wheel W is fixed on the shaft W at its front end, and engaged by a springpressed pawl N held in a. collar W rotatably mounted on the shaft W outside the ratchet wheel. A radial rod WV depends from the collar W and lies between two barsW and W which are secured to the plate B and project outwardly from the front edge of this plate. The bars W and W are of such length that the rod W extends between them in both positions of the frame W tlliliLlS to say, both when the punger W is in engagement with the rebars W and W causes the rod W and l cess W and when this plunger is in engagement with the recess W.

The engagement of the rod W with the the collar W to oscillate about the axis of the shaft W during the in-and-out movements of the plate W. The oscillatory movements of the collar W in one direction are transferred to the shaft W by means of the engagement between the pawl W and the ratchet W. and W' are so positioned that during each in-and-out movement of the plate W, the shaft W is turned through an are equal to that which separates adjacent teeth of the ratchet wheel W Furthermore, the position of the bars W and W and the inclination of the teeth of the ratchet W are such that this turning movement of the shaft W takes place during the latter part of the out movement of the plate W, and after the cone C has been drawn out of contact'with the needle J 4 A friction clutch retains the shaft W in the angular position in which it is set by each operation of the mechanism just described. This clutch includes a friction member W which engages a wheel 'W fixedon the shaft W The friction member W is mounted on a plunger W seated in a vertical bore W in an arm W projecting forward from the plate W. The friction member W is urged against the wheel W by a compression spring W reacting between the plunger W and an adjustable plug W secured in the lower portion of the bore W The mechanism which has just been described provides means for bringing points spaced regularly'around a circumference of the 'cone successively in, line with the axis of the injector J. It is, however, frequently desirable to make injections at regularly spaced points lying along a line incllned to a circumference of the .cone.. The work holder of the machine illustrated is arranged.

for making injections at each point of several series of points regularly spaced along One laiy of the yarn of the cone'and at each point 0 several series of points regularly spaced along the other lay of the yarn of the cone.

For this purpose the shaft W is mounted on the standard W in such manner that it' is free to move axially, as well as to turn about 1ts axis, and in the peripheral sur face of the wheel W is formed a groove W: having a plurality of helical portions wluch extend parallel to the lays of the yarnof the cone C. In the form illustrated, the groove W has two helical portions W,

W parallel to one lay of the yarn, and one helical portion W parallel to the other lay ofthe yarn. The ends of these three helical portions of the groove are spaced from each other, and are joined by connecting portions The 1bars W W so that the groove extends all the way around the circumference of the wheel W. The upper end of the plunger W which bears the friction member W entersthe groove WV, and, asthis plunger is fixed with respect to the standard W on which the shaft W is supported, the engagement between it and'the groove causes axial movement of the shaft W when the shaft is turned.

In order that injections may be made at regularly, spaced points along the lays' of the yarn on the cone, a series of injections should be made during the parts of arevolution of the shaft 7 during which the plunger W is in engagement with the helical portions W NV of the groove W and no injections should be made while the plunger is in the connecting portions W of the groove. Indicating means are, therefore, provided to indicate to the operator when the shaft WV is turned at the right angle for an injection. These indicating means include a pointer W mounted on the standard and projecting over the top of the wheel W at a point diametrically opposite the plunger l and marks l angular distanceequal to that between adjacent teeth ofthe ratchet wheel W The use of the machine which has been described is as follows A cone O of the yarn to be spotted is first secured on the shaft W of the work holder by means of the clutch K. This is done when the lever is thrown to the right, as shown in Fig. 1, so that the shaft V is as far as possible from the needle J The shaft W is then turned by grasping the wheel W to set one of the marks WV under the pointer W, unless the wheel is already 'set with one of its marks under .the pointer. The lever W is then thrown to the left,

moving the cone C towards the injector J and causing the needle J to penetrate the cone of yarn in a direction perpendicular to the cones surface C which 1s opposite the injector. The movement of the cone of yarn and the plate W is arrested when the surface C of the cone C comes in contact with the surface J of the stop J When the motion of the plate W is stopped, the end of the nozzle, which projects in front of the stop surface J, is thrust into the mass of yarn, compressing a part of the mass, and pressing the contact surface J firmly against the mass; and the needle J has penetrated the cone of yarn nearly, or quite, to the core C Since the core is usualto cause one rotation of the shaft P and one oscillation of the pump lever P. The

injected dye penetrates to the core C of the cone before any substantial part of it is absorbed into the pores of the yarn. The injection thus results in forming ashaft of dye extending into the cone of yarn in the passage opened by the needle J This shaft of dye then spreads, by absorption, into the portion of'the cone adjacent to the needle throughout the length of the shaft of dye injected. The portion ofthe cone colored by the dye extends from the outer surface of the cone to the core in a direction perpendicular to a plane tangent to the outer surface at the point where the injection is made. The dyed portion may have substantially the same cross-sectional area throughout its depth.

The lever W is then thrown to the right, moving the cone of yarn away from the injector so that the needle is withdrawn from the cone, and causing a turning of the cone through the angle which separates adjacent teeth of the ratchet W. If such turning of the cone brings another mark under the pointer W another injection is then made in the same manner. The portion of the cone dyed by this injection contacts with, but does not materially over-lap, the portion dyed by the previous injection.

Whenever the turning of the shaft W which takes ,place on each out movement of the wheel W brings the end mark of one of the series W W or W out from under the pointer W, the wheel -W is turned manually to bring the first mark of the next series under the pointer before another injection is made.

After an injection has been made with each one of the marks W of the wheel under the. pointer, the lever W is moved to shift the frame W along the cross-bars W and W If during the injections which have been made the frame W was set with the plunger W in the recess W, it is now moved to bring the plunger into the recess W, and, conversely, if the plunger has been in the recess W it is now brought into the receSs'W K After this change in the position of the frame W has been made, an injection is made with each of the marks w under the pointer W. This completes the spotting of the yarn with the cone (3, which may then be replaced by a fresh cone.

The machine may be operated with great rapidity, since to make each injection it is necessary only to throw the lever W to the left, press down the treadle W, and then throw the lever W to the right. The latter movement turns the cone into proper position for the next injection, so that no manual setting of the shaft W is required, q

except to turn the wheel W over each of the three spaces between the three series of" marks on the wheel.

The result of the operation which has been described is to dye sixportions of the cone of yarn. Each of the dyed portions is long and-comparatively narrow and extends in the direction of one of the lays of the yarn, and each extends from the outer surface of the cone G to its inner surface (i. e., its surface in contact with the core C Owing to the fact that, in'the operation of the machine, every injection is made under the same pressure and with the same quantity of. dye, eaclrdyed portion is of uniform width through its length, and all the dyed portions of thecone are 'of the same size and shape. Furthermore, a seriesof similar cones may be dyed in exactly uniform manner; and, by. adjusting the pressure used (as, for example, by changing the setting of the plug P" of the relief valve P) 'in accordance with the tightness of the winding of the yarn, uniform dyeing of a number of cones may be obtained notwithstanding differences in the manner in which their yarn has been wound. By adjustment of the injection pressure, and of the quantity of dye used for each injection, the shape of the dyed portions may be varied. A change in their shape may also be obtained by adjustment of the depth of the penetration of the needle J by changing its position in the chuck J By means of these adjustments each dyed portion may be made of uniform cross-section throughout its depth, asshown in Fig. 4, or may be made to taper.

The arrangement of the dyed portions on the cone may be varied by substituting for the wheel t similar wheels having difi'erently arranged grooves. a

The machine illustrated thus provides means for dyeing portions of a cone of yarn, and for giving the dyed portions any desired predetermined shape and size, and arranging them in any desired predetermined manner. By means of the machine, therefore, yarn may be spotted so as to produce, when knitted or woven into fabric, a mixture of a desired predetermined appearance.

Many of the features of the dyeing ma chine described in this application are described and claimed in my copending application Serial No. 629,633, filed April 3, 1923, and'such features are, in consequence, not made the subject matter of claims in this ap lication.

- hat is claimed is:

1. Apparatus for dyeing textiles, comprising means for successively injecting a plurality of limited quantities of liquid dye into I different parts of a mass of the textile to be dyed, said means being arranged to apply the same pressure to each limited quantity injected.

2. Apparatus of the class described, com prising an injector, a support for an absorbent mass, means for .causing relative movement between the injector and the support to lace the injector in operative relation with different parts of the mass successively, and means for forcing a plurality of limited quantities of liquid through the injector under equal pressures.

3. Apparatus of the class described, com prising an injector, means for forcing a plurality of limited quantities of liquid through the injector under equal pressures, and means for adjusting the amount of such pressures.

4. Apparatus of the class described, comprising an injector, a support for an absorbent mass, means for causing relative movement between the injector and the support toplace the injector in operative relation with different parts of: the mass successively, means for forcing a plurality of equal measured quantities of liquid through the injector, and means for adjusting said quantities.

5. In apparatus of the class described, the combination of an injector adapted to direct liquid into an absorbent mass, a pump having its discharge connected to said injector and having a reciprocatory plunger, means for opening the discharge of the pump at a predeterminedpoint of the in stroke of the plunger, and a relief valve on the pump arranged to open when the pressure in the pump reaches a predetermined amount.

6. In apparatus of the class described, the combination with a pump and an injector adapted to directliquid discharged from the pump into an absorbent mass, of means for suddenly opening-the discharge of the pump at the end of the compression stroke.

7. In apparatus of the class described, a pump comprising a casing providing a chamber closed at its lower end and having an intake opening, an air vent opening and a discharge opening, a reciprocatory plunger forming a closure for the upper end of said chamber and containing an air-filled compression chamber communicating with the pump chamber, and valve means operable to close the intake and air vent openings at the beginning of the down stroke of the plunger and to open the discharge opening after downward movement of the plunger.

8. In apparatus of the class described, a pump as claimed in claim ,7, in which the valve means consists of a sleeve formed integral with the plunger.

9. In apparatus of the class described, a

pump comprising a casing providing a chamber closed at its lower end and having an intake opening, an air-vent opening and a discharg opening, a reciprocatory plunger forming a closure for the upper end of said chamber and containing an air-filled compres- -opening, an air vent opening, a discharge opening and a by-pass opening, -a recipro catory plunger formlng aclosure for said chamber, means providingan air-filled compression chamber in communication with the pump chamber, valve means operable to close said intake and air vent openings at the beginning of an in stroke of the plunger and to open the discharge opening after inward movement of the plunger, and a relief valve arranged to open said by-pass opening when the pressure in the chamber reaches a predetermined amount.

a 11. In apparatus of the class described, a dye tank, an injector, a pump providing a chamber having an intake opening, an air vent opening, a discharge opening communieating with the injector, and a bypass opening, a conduit connecting the intake opening to the tank near the bottom thereof, a reciprocatory plunger forming a closure for the. pump chamber, means providing an airfilled compression chamber in communication with the pump chamber, valve means operable to close said intake and air vent openings at the beginning of an in stroke of the plunger and to open the discharge opening after inward movement of the plunger, a relief valve arranged to open said by-pass opening when the pressure in the chamber reachesa predetermined amount, and a conduit leading from said relief valve to the tank above the liquid level therein.

12. In apparatus of the class described, the combination with an injector for directing liquid into an absorbent mass and a pump operable to force a plurality of limited quantities of liquid dye through said injector under a desired predetermined pressure, of indicating means connected with said pump and adapted to indicate audibly on each operation of the pump whether or not the de sired pressure has been attained therein.

13. Apparatus of the class described, com prising a nozzle having a contact surface at its outer end, a support for an absorbent mass, means for causing a relative approaching movement between said support. and the, nozzle, and a stop fixed on the nozzle and' providing an annular abutment surface spaced outwardly from the nozzle and located to the rear of the contact surface thereof, so that the contact surface of the nozzle is thrust into the mass, compressing a part of it, before the approaching movement is arrested. V

14. In apparatus of the class described, the combination with a nozzle having a contact surface at its outer end, a support for an absorbent mass, and means for causing a relative approaching movement between said support and the nozzle, of a cup-shaped member which is fixed on .the nozzle, has at its outer edge an annular engagement surface, and has an inner surface tapering outwardly from said engagement surface so as to direct any liquid dripping from the nozzle away from the surface of the mass.

15. In apparatus of the class described, the combination with a nozzle having a con tact surface at its outer end, of a cup-shaped member which is fixed on said nozzle with its open end outward, has an inner surface increasing in diameter toward its rear end, and is provided with drip openings in its rear end. 7

16. In apparatus of the class described, the combination of an injector and a support for an absorbent mass mounted for relative approaching and separating movement in a direction parallel to the axis of the injector, and means actuated by such relative movement for causing a relative movement of the injector and the surface of the mass in a direction transverse to the axis of the injector.

17. In apparatus of the class described, the combination of an injector, a support for an absorbent mass, means for causing relative reciprocatory movement of the injector and the support in a direction parallel to the axis of the injector, and means actuated by one such reciprocatory movement to cause a predetermined relative movement between the surface of the mass and the injector in a direction transverse to the axis of the inj ector.

18. Apparatus of the class described, comprising a nozzle, a needle projecting from said nozzle, a support for an absorbent mass, means for causing relative reciprocatory movement between the nozzle and the support in a direction parallel to the needle to thrust the needle into the mass and to withdraw it therefrom, the length of the stroke of the reciprocatory movement being greater than the length of the projecting portion of the needle, and means actuated by a. part of such movement which occurs when the needle is out of engagement with the mass to cause relative movement between the surface of the mass and the needle in a direction transverse to the needle.

19. In apparatus of the class described, the combination of an injector and a work holder mounted for relative approaching and separating movement parallel to the axis of the injector, the work holder being adapted to hold a wound mass of yarn with its axis transverse to the axis of'the injector,

and means actuated by such relative movethe combination of an injector and a support for a wound mass of yarn, means for causing relative movement between'the injector and the mass along the axis of the injector, and means actuated by such relative movement to cause relative movement between the surface of the mass and the injector in a direction transverse to the axis of the injector and parallel to a lay of the yarn.

21. In apparatus of the class described, an injector and a support mounted for relative reciprocatory.movement parallel to the axis of the injector, a shaft .rotatably mounted on said support with its axis transverse to that of the injector, means for securing a wound mass of yarn on said shaft with its axis coincident with that of the shaft, and means actuated by each such reciprocatory movement to turn the shaft through a predetermined angle.

22. Apparatus of the class described, comprising a fixed injector, a slide mounted for reciprocatory movement parallel to the axis of the injector, a shaft rotatably mounted on said slide with its axis transverse to the axis of the injector, means for securing a wound incident with that of the shaft, a ratchet wheel fixed on said shaft, a pawl, a pawl holder rotatably mounted on said shaft, a rodextending radially from said pawl holder, and fixedengaging members positioned to oscillate the said rod about the axis of the sii zaft on each reciprocatory movement of the s 1 e.

23. .Apparatus of the class described, comprising an injector, a slide mounted' for reciprocatory movement parallel to the axis of the injector, a shaft mounted on said slide for rotary and axial movement with respect thereto, said shaft having its axis transverse to. the axis of the injector, means for securing a wound mass of yarn on said shaft with its axis coincident with that of the shaft, 2.

-wheel'fixed on said shaft and having a cymy hand.

VAN NESS. 

